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Cisco Bug: CSCvt88722 - cat9k keep auto-neg enabled even with hard code speed and duplex causing auto-neg mismatch

Last Modified

Sep 10, 2020

Products (20)

  • Cisco IOS
  • Cisco ASR 1000 Series IOS XE SD-WAN
  • Cisco 4221 Integrated Services Router
  • Cisco 1101 Industrial Integrated Services Router
  • Cisco 4331 Integrated Services Router
  • Cisco 4321 Integrated Services Router
  • Cisco 4431 Integrated Services Router
  • Cisco ASR 1002-X Router
  • Cisco ASR 1001-X Router
  • Cisco 4351 Integrated Services Router
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Known Affected Releases

16.12.1 16.12.2 16.12.3 17.4.1

Description (partial)

Link come with Half-duplex instead of full.

End device: Auto-neg: disabled. Speed: 100. Duplex: Full
9k switch: 
interface X/Y
speed 100 
duplex full

(Auto-neg will keep enabled)
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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